DataDirect Networks EF2800, User Manual

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DataDirect Networks EF2800 FC RAID Storage System User Guide (V 1.0)
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H.3 Configuring the Host Channels
You can configure several settings for each host channel
independently.
• Topology: You should be sure that the topology setting is correct for
your configuration. You can set the topology to:
- LOOP—Use this option for all configurations except when the
SM module is connected to a switch F-port. You must use this
option if the internal hubs are enabled.
- POINT-TO-POINT—Use this option only when you connect the
SM module to a switch F-port. If you change from Loop to Point
to Point mode after already establishing a public loop
connection, the switch may ignore subsequent attempts to
perform point to point initialization. To resolve this, see section
10.9 , "Host Fibre Channel Problems" on page 160 .
• Link Speed: You can set the speed to: 1 GB or 2 GB. When you
change the link speed, the other host channel on this I/O module
changes speed to match.
• Target ID: FC Loop ID—You may need to change the FC Loop ID if
you want the SM module to be at a specific address or if your system
checks addresses in reverse order (lowest address first). You have
two options:
- SOFT—Use this setting if you do not care whether the SM
module’s Loop ID changes when you power down and power
up. This setting lets the FC loop initialization process determine
the Loop ID.
- Any number between 0 and 125—Select a specific number if
you want the Loop ID to stay the same after you power down
and power up. The Disk Array Administrator software cannot
tell you which Loop IDs are available. To be sure that you have
successfully assigned the Loop ID you want, check the Loop ID
after you restart the SM module. If the SM module cannot get
the specified Loop ID during the loop initialization process, it
will try to get a soft address.
• CAPI LUN: Each SM module has one LUN that you can change when
you configure the host channels. You only need to assign a CAPI
LUN if you are using CAPI to configure the
EF2800
over a host